test: migrated graceful-shutdown.test.js from tap to node:test

[Tony133]

Checklist

• [ ] run npm run test and npm run benchmark
• [ ] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [x] commit message and code follows the Developer's Certification of Origin and the Code of conduct

Proposal:

• migrated graceful-shutdown.test.js from tap to node:test 🔥